Fix hash update.

diff --git a/src/mc/mc_hash.cpp b/src/mc/mc_hash.cpp
index 626927f..71f8fe8 100644 (file)
--- a/src/mc/mc_hash.cpp
+++ b/src/mc/mc_hash.cpp
@@ -29,7 +29,7 @@ public:
   template<class T>
   void update(T& x)
   {
-    state_ = (state_ << 5) + state_ + state_;
+    state_ = (state_ << 5) + state_ + x;
   }
   hash_type value()
   {